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Two-Phase Flows in Mini-/Micro-Gas Flow Channels of PEM Fuel Cells

[+] Author Affiliations
Sung Chan Cho, Yun Wang

University of California, Irvine, Irvine, CA

Paper No. IMECE2013-66070, pp. V06BT07A023; 6 pages
doi:10.1115/IMECE2013-66070
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 6B: Energy
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5629-1
  • Copyright © 2013 by ASME

abstract

In this paper, two-phase flow dynamics in a micro channel with various wall conditions are both experimentally and theoretically investigated. Annulus, wavy and slug flow patterns are observed and location of liquid phase on different wall condition is visualized. The impact of flow structure on two-phase pressure drop is explained. Two-phase pressure drop is compared to a two-fluid model with relative permeability correlation. Optimization of correlation is conducted for each experimental case and theoretical solution for the flows in a circular channel is developed for annulus flow pattern showing a good match with experimental data in homogeneous channel case.

Copyright © 2013 by ASME

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